Devices descending from K903326

3 later devices reach Nidek US-2000 through their predicates, nearest generation first.

Generation	Number	Device	Applicant	Decided	Own descendants	Recalls
+1	K020876	Echoscan, Model US-1800	Nidek, Inc.	2002	2	—
+2	K133132	Optical Biometer AL-Scan	Nidek Co., Ltd.	2014	0	1
+2	K042099	Tonopach Ultrasonic Tonometer/Pachymeter Model P-201 (the Tonopach)	Retinapharma Technologies, Inc.	2004	0	—